[
https://issues.apache.org/jira/browse/KAFKA-2359?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15336331#comment-15336331
]
Mirza Gaush Beg commented on KAFKA-2359:
----------------------------------------
Another use case:
i want to retrieve data based on an offset range (starting from last committed
offset to the last message present at topic partition) using
'KafkaUtils.createRDD' for the same consumer group.id. I am using high level
consumer API from 0.9.0.1, then following below steps,
2. Call 'subscribe'
3. call 'partitionsFor'
4. call 'committed' - gives the last committed offset
5. call 'seekToEnd' - to retrieve the last offset and this fails with "Caused
by: java.lang.IllegalStateException: No current assignment for partition
test-topic-0". exception is seen with other two methods 'seek' and
'seekToBeginning'
> New consumer - partitions auto assigned only on poll
> ----------------------------------------------------
>
> Key: KAFKA-2359
> URL: https://issues.apache.org/jira/browse/KAFKA-2359
> Project: Kafka
> Issue Type: Bug
> Affects Versions: 0.9.0.0
> Reporter: Stevo Slavic
> Priority: Minor
>
> In the new consumer I encountered unexpected behavior. After constructing
> {{KafkaConsumer}} instance with configured consumer rebalance callback
> handler, and subscribing to a topic with "consumer.subscribe(topic)",
> retrieving subscriptions would return empty set and callback handler would
> not get called (no partitions ever assigned or revoked), no matter how long
> instance was up.
> Then I found by inspecting {{KafkaConsumer}} code that partition assignment
> will only be triggered on first {{poll}}, since {{pollOnce}} has:
> {noformat}
> // ensure we have partitions assigned if we expect to
> if (subscriptions.partitionsAutoAssigned())
> coordinator.ensurePartitionAssignment();
> {noformat}
> I'm proposing to fix this by including same {{ensurePartitionAssignment}}
> fragment in {{KafkaConsumer.subscriptions}} accessor as well.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
